LI-Puma-revised manuscrip- final version.pdf (1.55 MB)
Novel sea buckthorn biocarbon SBC@beta-FeOOH composites: Efficient removal of doxycycline in aqueous solution in a fixed-bed through synergistic adsorption and heterogeneous Fenton-like reaction
journal contribution
posted on 2016-02-23, 09:50 authored by Xia Zhang, Bo Bai, Gianluca Li-Puma, Honglun Wang, Yourui SuoAkaganeite (β-FeOOH) nanoparticles were successfully anchored on the surface of porous sea buckthorn biocarbon (SBC) via a simple low-temperature hydrothermal process without use surfactants or external forces. The SBC@β-FeOOH composite was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectrometry (EDS). On the basis of characterization methods, a possible mechanism of formation of the SBC@β-FeOOH composite was discussed. The SBC@β-FeOOH composite was used in fixed-bed columns for the effective removal of doxycycline (DC) from an aqueous solution, by the synergistic effect of adsorption and Fenton-like oxidation reaction. The effects of inlet DC concentration (22-32 mg/L) feed flow rate (1-3 mL/min) SBC@β-FeOOH bed depth (0.7-1.5 cm) and pH (2-11) on the adsorption breakthrough profiles were investigated. The adsorption process was controlled by the ionic speciation of the adsorbate DC and the available binding sites of SBC@β-FeOOH. It was simulated by the Thomas and Yoon-Nelson models at different conditions. The bed of SBC@β-FeOOH saturated with DC was readily regenerated, in situ, by a heterogeneous Fenton-like oxidation reaction. The synergistic effect resulting from the biosorption nature of SBC and the catalytic oxidation properties of the supported β-FeOOH nanoparticles results in a new promising composite material for water treatment and purification.
Funding
This work was supported by Shaanxi Provincial Natural Science Foundation of China (No.2015JM2071), National Natural Science Foundation of China (No.21176031) and Fundamental Research Funds for the Central Universities (No. 2014G3292007)
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Published in
Chemical Engineering JournalVolume
284Pages
698 - 707 (10)Citation
ZHANG, X. ...et al., 2016. Novel sea buckthorn biocarbon SBC@beta-FeOOH composites: Efficient removal of doxycycline in aqueous solution in a fixed-bed through synergistic adsorption and heterogeneous Fenton-like reaction. Chemical Engineering Journal, 284, pp. 698-707.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2015-09-02Publication date
2015-09-11Copyright date
2016Notes
This paper was accepted for publication in the journal Chemical Engineering Journal and the definitive published version is available at http://dx.doi.org/10.1016/j.cej.2015.09.012ISSN
1385-8947Publisher version
Language
- en